Clinical characteristics and risk factors for major thrombosis in 604 Chinese patients with low-risk essential thrombocythemia / 中华血液学杂志
Chinese Journal of Hematology
;
(12): 785-790, 2014.
Article
in Chinese
| WPRIM
| ID: wpr-242058
ABSTRACT
<p><b>OBJECTIVE</b>To analyze clinical and molecular characteristics of low-risk essential thrombocythemia (ET) in a large cohort of Chinese patients and to explore risk factors for major thrombosis and treatment strategies.</p><p><b>METHODS</b>Medical records of patients with an initial diagnosis of ET from March 1982 to May 2012 in our hospital were retrospectively analyzed.</p><p><b>RESULTS</b>A total of 604 low-risk ET patients were enrolled with a median follow-up of 49 months (range0-338). 43(7.1%) patients experienced major thrombotic events. Cox proportional hazards regression revealed JAK2 V617F mutation (HR=2.279; P=0.035) and cardiovascular risk factors (CVF) (HR=2.541; P=0.006) to be risk factors for total thrombotic events, while only CVF (HR=2.633; P=0.008) was risk factor for arterial thrombosis. None of the evaluated factors was related to venous thrombosis. Patients with both JAK2 V617F mutation and CVF had a worse thrombosis- free survival than those with only one risk factor (P<0.05). In patients with JAK2 V617F or CVF alone, antiplatelet treatment (P=0.016) significantly decreased the risk of thrombosis, while those with both JAK2 V617F and CVF could benefit from cytoreductive agents (P=0.018).</p><p><b>CONCLUSION</b>Chinese low-risk ET patients have a lower risk of thrombosis than Caucasian low-risk ET patients. JAK2 V617F mutation and CVF are the most significant risk factors for thrombosis. Existence of both risk factors further increases the thrombotic risk. Treatment strategies on low-risk ET patients should be made based on presence or absence of risk factors.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Thrombocytopenia
/
Thrombosis
/
Retrospective Studies
/
Risk Factors
/
Asian People
/
Janus Kinase 2
/
Genetics
/
Mutation
Type of study:
Etiology study
/
Observational study
/
Risk factors
Limits:
Humans
Language:
Chinese
Journal:
Chinese Journal of Hematology
Year:
2014
Type:
Article
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